CVE-2025-15494 is a SQL injection vulnerability identified in the RainyGao DocSys product, affecting all versions up to 2.02.37. The vulnerability resides in an unspecified function within the com/DocSystem/mapping/UserMapper.xml file, where the Username argument is improperly validated, allowing an attacker to inject arbitrary SQL commands. This injection flaw can be exploited remotely without requiring user interaction or elevated privileges, making it relatively easy to exploit. The vulnerability has a CVSS 4.0 base score of 5.3, indicating a medium severity level, with network attack vector, low attack complexity, no privileges or user interaction needed, and limited impact on confidentiality, integrity, and availability. The vendor was notified but has not issued any response or patches, and public exploit code has been disclosed, increasing the risk of exploitation. The lack of vendor response and patch availability means organizations must rely on defensive controls and monitoring until an official fix is released. The vulnerability could allow attackers to access, modify, or delete sensitive data stored in the DocSys database, potentially leading to data breaches, unauthorized data manipulation, or denial of service conditions. Given the widespread affected versions, the scope of impact is broad for users of this document management system.

The SQL injection vulnerability in RainyGao DocSys can have significant impacts on organizations globally that use this software for document management. Exploitation could lead to unauthorized access to sensitive documents and user data, data corruption or deletion, and potential disruption of document management services. This compromises confidentiality, integrity, and availability of critical business information. Attackers could leverage the vulnerability to escalate privileges within the system or pivot to other internal resources. The public disclosure of exploit code increases the likelihood of attacks, especially against organizations that have not implemented mitigations or do not have compensating controls. The absence of vendor patches exacerbates the risk, potentially leading to prolonged exposure. Organizations in sectors relying heavily on document management, such as legal, financial, healthcare, and government, face heightened risks of data breaches and operational disruption.

1. Immediately restrict network access to the DocSys application, limiting it to trusted internal IP addresses and VPN users only. 2. Implement Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection patterns targeting the Username parameter. 3. Conduct thorough logging and monitoring of database queries and application logs to identify anomalous or suspicious activities indicative of SQL injection attempts. 4. Employ input validation and sanitization at the application layer if possible, even as a temporary measure, to filter out malicious input. 5. Isolate the DocSys database with strict access controls and least privilege principles to minimize damage if exploitation occurs. 6. Prepare for incident response by backing up critical data regularly and verifying backup integrity. 7. Engage with the vendor for updates and patches, and apply any official fixes immediately upon release. 8. Consider deploying database activity monitoring tools to detect unauthorized queries in real time. 9. Educate internal teams about the vulnerability and ensure rapid reporting of suspicious behavior related to DocSys. 10. If feasible, evaluate alternative document management solutions with stronger security postures until this vulnerability is resolved.